51668589 has 24 divisors (see below), whose sum is σ = 80496768. Its totient is φ = 29393280.

The previous prime is 51668567. The next prime is 51668621. The reversal of 51668589 is 98586615.

51668589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51668589 - 2¹⁵ = 51635821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51668489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39189 + ... + 40485.

It is an arithmetic number, because the mean of its divisors is an integer number (3354032).

Almost surely, 2^51668589 is an apocalyptic number.

It is an amenable number.

51668589 is a deficient number, since it is larger than the sum of its proper divisors (28828179).

51668589 is a wasteful number, since it uses less digits than its factorization.

51668589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1578 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 51668589 is about 7188.0866021494. The cubic root of 51668589 is about 372.4564794583.

The spelling of 51668589 in words is "fifty-one million, six hundred sixty-eight thousand, five hundred eighty-nine".